<template>
	<view class="list">
		<Header></Header>
		<view class="list-main">
			<view class="list-l">
				<view v-for='item in firstList' :key='item.id' :class='current==item.id?"active":"" '
					@click='tabsFirst(item.id)'>
					{{item.categoryName}}
				</view>
			</view>
			<view class="list-r">
				<scroll-view scroll-y="true" :style="'height:'+height+'px;'">
					<view>
						<view class="r-img">
							<image src="../../static/banner.d093dd6e.png" mode=""></image>
						</view>
						<view class="r-main">
							<view class="r-main-item" v-for="item in secondList" :key="item.id">
								<image :src="item.thumbnail" mode=""></image>
								<text>{{item.categoryName}}</text>
							</view>
						</view>
					</view>
				</scroll-view>
			</view>
		</view>
	</view>
</template>

<script>
	import Header from '@/components/common/Header.vue'
	import {
		getFirstCategorys,
		getSecondCategorys
	} from '../../api/course.js'
		import {  mixin  } from '@/mixins/mixin.js'
	export default {
		mixins:[mixin],
		components: {
			Header
		},
		data() {
			return {
				firstList: [{
					categoryName: '全部',
					id: '-1'
				}],
				secondList: [],
				current: '-1',
				categoryParams: {
					categoryId: -1
				},
				height:0,
			}
		},
		onLoad() {
			//获取一级数据
			getFirstCategorys().then(res => {
				this.firstList = [...this.firstList, ...res.list];
			})
			//获取二级数据
			this.getCategorys();
			
			
		},
		onReady() {
			this.height=this.getHeight('.header-search')
		},
		methods: {
			//获取二级数据
			getCategorys() {
				getSecondCategorys(this.categoryParams).then(res => {
					this.secondList = res.list;
					console.log(res)
				})
			},
			//切换一级类目
			tabsFirst(id) {
				this.current = id;
				//获取对应一级的二级数据
				this.categoryParams.categoryId = id;
				this.getCategorys();
			}
		}
	}
</script>

<style>
	.list-main {
		display: flex;
		justify-content: space-between;
	}

	.list-l {
		width: 217rpx;
		line-height: 77rpx;
		font-size: 28rpx;
		color: #777777;
		text-align: center;
		background: rgba(247, 249, 255, 0.39);
		
	}
	.list-l > view{
		padding: 18rpx 0;
	}

	.list-r {
		flex: 1;
		display: flex;
		flex-direction: column;
		
	}

	.r-img {
		padding: 0 34rpx;
	}

	.r-img image {
		width: 479rpx;
		height: 192rpx;
		border-radius: 17rpx;
	}

	.r-main {
		display: flex;
		flex-wrap: wrap;
	}

	.r-main-item {
		display: flex;
		flex-direction: column;
		align-items: center;
		width: 33.3333%;
		margin-top: 44rpx;
	}

	.r-main-item image {
		width: 83rpx;
		height: 83rpx;
	}

	.r-main-item text {
		padding: 18rpx 0;
		font-size: 24rpx;
		color: #A9A9A9;
	}

	.active {
		position: relative;
		color: #3780EF;
		font-weight: 400;
	}

	.active:before {
		content: '';
		position: absolute;
		left: 0;
		top: 50%;
		width: 6rpx;
		height: 40%;
		transform: translateY(-50%);
		background: rgba(55, 128, 239, 0.27);
		border: 1px solid #0065FF;
		border-radius: 3px;
	}
</style>